Synonyms|29Antonyms|1|Broader|2Narrower|0Related|0
0
secret device
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secret formula
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secret method
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skeleton in cupboard(expression, idiom, confidence, mystery)
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skeleton in the cupboard(expression, idiom, confidence, mystery)
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top secret information(noun, secret)
0
trade secret(noun, secret)
0
unknown(confidence, mystery)
0
unrevealed(confidence, mystery)
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APASmart Define. (2015). classified information thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/classified_information/thesaurus/synonyms
ChicagoSmart Define. 2015. "classified information thesaurus" https://smartdefine.org/classified_information/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, classified information thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/classified_information/thesaurus/synonyms>.
MLASmart Define. "classified information thesaurus" 13 April 2015. Web. 27 September 2026. <https://smartdefine.org/classified_information/thesaurus/synonyms>